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Invoking a Method

• Supply implicit parameter (null for static methods)
  
• Supply array of explicit parameter values
• Wrap primitive types
• Unwrap primitive return value
• Example: Call System.out.println("Hello, World") the hard way.
  

  Method m = PrintStream.class.getDeclaredMethod(
     "println", 
     new Class[] { String.class } );
  m.invoke(System.out, 
     new Object[] { "Hello, World!" }); 
  

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